Compilare: user.cpp: In function ‘int main()’: user.cpp:41:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<div[x].size();i++) ^ user.cpp:46:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<div[x].size()-1;i++) ^ user.cpp:48:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=i+1;j<div[x].size();j++) ^ user.cpp:33:23: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f1,"%d",&n); ^ user.cpp:37:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f1,"%lld",&x); ^